I'm thinking he wants to cut an actual DVD movie down to fit on a single layer 4.7.

If that is the case, I opt for DVD Shrink or DVD Decrypter. If you are inexperienced in these kinds of things (by your question, I am assuming you are), use DVD Shrink. It's much more user friendly than Decrypter. However, if DVD Shrink fails to get by a copyright protection, use Decrypter to rip the DVD to your hard drive, and then shrink the files with DVD Shrink.

Hope this helps you...